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Commit Graph

376361 Commits

Author SHA1 Message Date
K. Y. Srinivasan
d2242a3843 Drivers: hv: Fix a bug in get_vp_index()
Linux' notion of cpuid is different from the Host's notion of CPUID. In the
call to bind the channel interrupts, we should use the host's notion of
CPU Ids. Fix this bug.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: Stable <stable@vger.kernel.org> (V3.9)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 09:56:55 -07:00
Tomas Winkler
46e0cd87d9 mei: fix out of array access to me clients array
The patch 9f81abdac3: "mei: implement mei_cl_connect function"
from Jan 8, 2013, leads to the following static checker warning:
"drivers/misc/mei/main.c:522 mei_ioctl_connect_client()
	 warn: check 'dev->me_clients[]' for negative offsets (-2)"

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 09:54:26 -07:00
Linus Torvalds
c4ad180f0e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 update from Martin Schwidefsky:
 "An additional sysfs attribute for channel paths and a couple of bux
  fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pgtable: fix ipte notify bit
  s390/xpram: mark xpram as non-rotational
  s390/smp: fix cpu re-scan vs. cpu state
  s390/cio: add channel ID sysfs attribute
  s390/ftrace: fix mcount adjustment
  s390: fix gmap_ipte_notifier vs. software dirty pages
  s390: disable pfmf for clear page instruction
  s390/disassembler: prevent endless loop in print_fn_code()
  s390: remove non existent reference to GENERIC_KERNEL_THREAD
2013-05-21 09:36:46 -07:00
dyoung@redhat.com
97521978c5 driver core: print sysfs attribute name when warning about bogus permissions
Make it obvious to see what attribute is using bogus permissions.

Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 09:05:52 -07:00
Greg Kroah-Hartman
1c04fc3536 driver core: export subsys_virtual_register
Modules want to call this function, so it needs to be exported.

Reported-by: Daniel Mack <zonque@gmail.com>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21 09:05:52 -07:00
Stephen Boyd
aa03381046 ARM: smp: Drop RCU_NONIDLE usage in cpu_die()
Before f7b861b7a6 ("arm: Use generic idle loop") ARM would kill the
CPU within the rcu idle section.  Now that the rcu_idle_enter()/exit()
pair have been pushed lower down in the idle loop this is no longer true
and so using RCU_NONIDLE here is no longer necessary and also harmful
because RCU is not actually idle at this point.

Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-21 08:56:21 -07:00
Linus Torvalds
0ddaa97425 Merge branch 'drm-radeon-sun-hainan' of git://people.freedesktop.org/~airlied/linux
Pull radeon sun/hainan support from  Dave Airlie:
 "Since I know its outside the merge window, but since this is new hw I
  thought I'd try and provoke the new hw exception, it just fills in the
  blanks in the driver for the new AMD sun and hainan chipsets."

* 'drm-radeon-sun-hainan' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: add Hainan pci ids
  drm/radeon: add golden register settings for Hainan (v2)
  drm/radeon: sun/hainan chips do not have UVD (v2)
  drm/radeon: track which asics have UVD
  drm/radeon: radeon-asic updates for Hainan
  drm/radeon: fill in ucode loading support for Hainan
  drm/radeon: don't touch DCE or VGA regs on Hainan (v3)
  drm/radeon: fill in GPU init for Hainan (v2)
  drm/radeon: add chip family for Hainan
2013-05-21 08:50:57 -07:00
Linus Torvalds
007b703b3e Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull DRM fixes from Dave Airlie:
 "This is just a set of nouveau and radeon fixes, the nouveau ones fix
  some suspend/resume regressions since use of copy engines and some
  fixes for Z compression on some newer chipsets."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/dce2: use 10khz units for audio dto calculation
  drm/radeon: Fix VRAM size calculation for VRAM >= 4GB
  drm/radeon: Remove superfluous variable
  drm/nouveau: ensure channels are stopped before saving fences for suspend
  drm/nv50/fifo: prevent races between clients updating playlists
  drm/nvc0/fifo: prevent CHAN_TABLE_ERROR:CHANNEL_PENDING on fifo fini
  drm/nvc0/fifo: prevent races between clients updating playlists
  drm/nve0/fifo: prevent races between clients updating playlists
  drm/nve0/ltcg: poke the partition count into yet another register
  drm/nvc0/ltcg: fix handling of disabled partitions
  drm/nvc0/ce: disable ce1 on a number of chipsets
  drm/nouveau/bios: fix thinko in ZM_MASK_ADD opcode
  drm/nouveau: fix build with nv50->nvc0
2013-05-21 08:50:09 -07:00
Borislav Petkov
bbb013b920 amd64_edac: Fix bogus sysfs file permissions
Fix yet another issue caught by 8f46baaa7e ("base: core: WARN() about
bogus permissions on device attributes").

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-05-21 09:13:11 +02:00
Alexandre Courbot
8d9849b051 ARM: tegra: defconfig fixes
The AK8975 Kconfig option was renamed during the 3.10 merge window.
Adjust tegra_defconfig to enable the new name, so it's not missing
useful features.

Tegra DRM support used to be enabled in the default Tegra configuration,
but it now depends on CONFIG_TEGRA_HOST1X which is disabled by default.
Enable CONFIG_TEGRA_HOST1X so that DRM support is compiled in again.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
[swarren, squashed Alex's and my changes together]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:50:34 -07:00
Linus Walleij
b98da4db29 ARM: nomadik: fix IRQ assignment for SMC ethernet
The assignment of IRQ for the SMC91x ethernet adapter had two
problems making it non-working:

- It was not put into the ethernet device node. Let's do this
  by using the board-specific overlay, so we can make other
  overlays on other Nomadik boards.

- The IRQ number was actually completely wrong, this was the
  number for NHK8815, not S8815.

After this ethernet starts working on the USB S8815.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:49:51 -07:00
Olof Johansson
d595f0a0c5 Some ux500 fixes for the v3.10-rc series:
- Fixes up the debug UART
 - Fix dangerous platform data double-assignment
 - Fix auxdata for the ethernet device
 - Select REGULATOR to satisfy Kconfig
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Merge tag 'ux500-arm-soc-v3.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into fixes

From Linus Walleij, some ux500 fixes for the v3.10-rc series:
- Fixes up the debug UART
- Fix dangerous platform data double-assignment
- Fix auxdata for the ethernet device
- Select REGULATOR to satisfy Kconfig

* tag 'ux500-arm-soc-v3.10-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: ux500: select REGULATOR
  ARM: ux500: Provide device enumeration number suffix for SMSC911x
  ARM: ux500: Fix incorrect DEBUG UART virtual addresses
  ARM: ux500: Remove duplicated assignment of ab8500_platdata

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:49:04 -07:00
Olof Johansson
a706d8505c The imx fixes for 3.10:
* A few imx6 clock fixes.  Nothing is extremely important, but since
   we're still in early -rc, I send them for 3.10 inclusion.
 
 * Having bootloader handle ARM errata, we will need to replicate the
   diagnostic register of boot cpu into secondary cores, since
   bootloader only sets up boot cpu.  Otherwise, errata workaround simply
   does not work.
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Merge tag 'imx-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, imx fixes for 3.10:

- A few imx6 clock fixes.  Nothing is extremely important, but since
  we're still in early -rc, I send them for 3.10 inclusion.
- Having bootloader handle ARM errata, we will need to replicate the
  diagnostic register of boot cpu into secondary cores, since
  bootloader only sets up boot cpu.  Otherwise, errata workaround simply
  does not work.

* tag 'imx-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: imx: fix typo in gpu3d_shader_sels
  ARM: imx: replicate the diagnostic register of boot cpu into secondary cores
  ARM i.MX6: correct MLB clock configuration
  ARM i.MX6q: Fix periph_clk2_sel and periph2_clk2_sel clocks

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:46:46 -07:00
Olof Johansson
7a7e3472dc Merge tag 'fixes-3.10-2' of git://git.infradead.org/users/jcooper/linux into fixes
From Jason Cooper, mvebu fixes for v3.10 (round 2):
 - mvebu (and orion SoCs)
    - remove init_dma_coherent_pool_size()
 - mvebu
    - fix ranges DT property
    - fix DT reg value for L2 cache
    - select ARCH_REQUIRE_GPIOLIB
 - orion legacy
    - fix num_resources and id for ge10 and ge11

* tag 'fixes-3.10-2' of git://git.infradead.org/users/jcooper/linux:
  ARM: dts: mvebu: Fix wrong the address reg value for the L2-cache node
  ARM: plat-orion: Fix num_resources and id for ge10 and ge11
  arm: mvebu: fix the 'ranges' property to handle PCIe
  ARM: mvebu: select ARCH_REQUIRE_GPIOLIB for mvebu platform
  ARM: mvebu: Fix ranges entry on XP GP board
  ARM: Orion: Remove redundant init_dma_coherent_pool_size()

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:43:29 -07:00
Olof Johansson
7ad915f5eb Fixes for omaps:
- a section mismatch fix for hwmod
 - boot fix for omap2plus_defconfig for omap2
 - musb interrupt fix when using device tree
 - am33xx clock fix that I missed earlier somehow
 - omap1 dma return code error fix
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Merge tag 'omap-for-v3.10-rc1/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren, fixes for omaps:
- a section mismatch fix for hwmod
- boot fix for omap2plus_defconfig for omap2
- musb interrupt fix when using device tree
- am33xx clock fix that I missed earlier somehow
- omap1 dma return code error fix

* tag 'omap-for-v3.10-rc1/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: AM33XX: Add missing .clkdm_name to clkdiv32k_ick clock
  ARM: OMAP2+: Add missing CONFIG_ARCH_MULTI_V6=y to omap2plus_defconfig
  ARM: OMAP: fix error return code in omap1_system_dma_init()
  ARM: OMAP: fix __init section mismatch for _enable_preprogram
  ARM: dts: Fix musb interrupt for device tree booting

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:43:24 -07:00
Srinivas Kandagatla
9f8466c6e0 ARM: vt8500: Add missing NULL terminator in dt_compat
When I tried booting a stih415 Dual core A9 with multi_v7_defconfig, it
failed to boot. The issues seems to be changing by enabling or disabling
VT8550 platform. Having a quick look at dt_compat list, it seems to miss
a NULL terminator, which means of_flat_dt_match will compat check will
cross the boundary of dt_compat and fault at some point , which is what
was happening in my case.

Without this patch if we try to boot multi_v7_defconfig you might notice
that some of the platforms might fault if they fall after vt8500 in
machine-desc list. Other platforms which fall before vt8500 in mdesc list
will not fault.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:30:54 -07:00
Olof Johansson
8582df0f63 Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
From Nicolas Ferre:
An important revert on at91rm9200 platform related
to timers that prevented the platform to boot properly.
Then one pinctrl adjustments for SPI CS and a couple of
trivial typos.

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91: rm9200 fix time support
  ARM: at91: dts: request only spi cs-gpios used on sama5d3x cpu module
  ARM: at91/trivial: typo in GEM compatible string
  ARM: at91/trivial: fix model name for SAM9X25-EK

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:30:50 -07:00
Olof Johansson
4ae608e137 mvebu fixes for v3.10 round 1
- mvebu
     - duplicate alias removal
     - augment new internal-regs dt node with proper ranges node
 
  - kirkwood
     - stable fix for QNAP TS-11x/TS-21x enabling PCIe port 1
 
  - plat-orion
     - missing ehci include in common.h.  needed within common.h.
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Merge tag 'fixes-3.10-1' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper, mvebu fixes for v3.10:
 - mvebu
    - duplicate alias removal
    - augment new internal-regs dt node with proper ranges node
 - kirkwood
    - stable fix for QNAP TS-11x/TS-21x enabling PCIe port 1
 - plat-orion
    - missing ehci include in common.h.  needed within common.h.

* tag 'fixes-3.10-1' of git://git.infradead.org/users/jcooper/linux:
  ARM: mvebu: Add a ranges entry to translate devbus childs
  ARM: plat-orion: add missing ehci include to common.h
  Kirkwood: Enable PCIe port 1 on QNAP TS-11x/TS-21x
  ARM: mvebu: do not duplicate the mpic alias

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:30:43 -07:00
Lucas Stach
6ec3240047 clk: tegra: add ac97 controller clock
AC97 controller clock is hardwired to pll_a_out0.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:24:34 -07:00
Lucas Stach
7e94984495 clk: tegra: remove USB from clk init table
The USB clocks are just clock gates, so no need to set a specific clock.
In fact trying to set a specific clock is just a NOP if the requested
clockrate is the same as those of the parent (clk_m) or will trigger a
WARN_ON() if rates don't match up.

As we are not setting a specific rate, nor activating the clocks at
init, there is no point in keeping the the usb entries in the clock init
table.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-05-20 23:24:34 -07:00
Dave Airlie
cc3e06a57d Merge branch 'drm-fixes-3.10-sun' of git://people.freedesktop.org/~agd5f/linux into drm-next
This is the pull request for AMD Sun/Hainan support.  I've
split it out separately from my regular fixes stream.  Hainan
is a new SI asic with no UVD or DCE hardware.  The patches are
minimally invasive; basically just pci ids and skipping UVD and
DCE init for this family.  Most of the changes to si.c are just
the golden register tables for the family.

* 'drm-fixes-3.10-sun' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: add Hainan pci ids
  drm/radeon: add golden register settings for Hainan (v2)
  drm/radeon: sun/hainan chips do not have UVD (v2)
  drm/radeon: track which asics have UVD
  drm/radeon: radeon-asic updates for Hainan
  drm/radeon: fill in ucode loading support for Hainan
  drm/radeon: don't touch DCE or VGA regs on Hainan (v3)
  drm/radeon: fill in GPU init for Hainan (v2)
  drm/radeon: add chip family for Hainan
2013-05-21 09:42:55 +10:00
Dave Airlie
a3f6902672 Merge branch 'drm-fixes-3.10' of git://people.freedesktop.org/~agd5f/linux into drm-next
Minor bug fixes.

* 'drm-fixes-3.10' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon/dce2: use 10khz units for audio dto calculation
  drm/radeon: Fix VRAM size calculation for VRAM >= 4GB
  drm/radeon: Remove superfluous variable
2013-05-21 09:41:33 +10:00
Linus Torvalds
c7788792a5 Linux 3.10-rc2 2013-05-20 14:37:38 -07:00
Linus Torvalds
669c743362 Fixes:
* Regression fix in xen privcmd fixing a memory leak.
  * Add Documentation for tmem driver.
  * Simplify and remove code in the tmem driver.
  * Cleanups.
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Merge tag 'stable/for-linus-3.10-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 - Regression fix in xen privcmd fixing a memory leak.
 - Add Documentation for tmem driver.
 - Simplify and remove code in the tmem driver.
 - Cleanups.

* tag 'stable/for-linus-3.10-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: Fixed assignment error in if statement
  xen/xenbus: Fixed over 80 character limit issue
  xen/xenbus: Fixed indentation error in switch case
  xen/tmem: Don't use self[ballooning|shrinking] if frontswap is off.
  xen/tmem: Remove the usage of '[no|]selfballoon' and use 'tmem.selfballooning' bool instead.
  xen/tmem: Remove the usage of 'noselfshrink' and use 'tmem.selfshrink' bool instead.
  xen/tmem: Remove the boot options and fold them in the tmem.X parameters.
  xen/tmem: s/disable_// and change the logic.
  xen/tmem: Fix compile warning.
  xen/tmem: Split out the different module/boot options.
  xen/tmem: Move all of the boot and module parameters to the top of the file.
  xen/tmem: Cleanup. Remove the parts that say temporary.
  xen/privcmd: fix condition in privcmd_close()
2013-05-20 14:25:19 -07:00
David S. Miller
3ccfc1b1d2 Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
This pull request is intended for the 3.10 series.  It contains a
variety of fixes for problems discovered during the merge window and
after 3.10-rc1.

For the mac80211 bits, Johannes says the following:

"This is what I have:
 * a patch from Felix to fix RCU usage in his rate table code
 * a patch from Ilan to add the wdev id to some notifications so they can
   actually be used by userspace
 * Sasha Levin found an issue in how hwsim handles devices
 * a fix for a bug in the wiphy_register() error path that's been there forever
 * three fixes for WoWLAN
 * AP mode frame matching was erroneously giving frames to all virtual AP
   interfaces (reported by Jouni)
 * a fix for HT handling in my CSA changes, found by Sujith
 * a fix for some locking simplifications gone wrong
 * Ben Greear found more cfg80211/mac80211 state confusion
 * and a fix for another bug found by Jouni: local state changes need to be
   reported by mac80211 to cfg80211 so it disconnects properly."

And for the iwlwifi bits, he says:

"I have fixes for a firmware crash during resume, multicast RX,
aggregation and a workaround for a firmware scanning bug."

Along with those...

Albert Pool adds a USB ID to the rtl8192cu driver.

Arend van Spriel restores a driver option support flag that had been
removed from 3.9 due to a bug in that version of the driver.

Felix Fietkau fixes a trio of ath9k issues with a series of small
patches.

Geert Uytterhoeven provides a Kconfig fix for ath9k (which you also
merged, so it isn't in the diff here).

Larry Finger gives us a fix for a build warning on big-endian systems
for rtlwifi.

Rafał Miłecki adds some core IDs to the bcma driver.

Sujith Manoharan fixes a module unloading crash in ath9k, and corrects
some calibration settings for AR9485.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:05:22 -07:00
stephen hemminger
98962baad7 8139cp: reset BQL when ring tx ring cleared
This patch cures transmit timeout's with DHCP observed
while running under KVM. When the transmit ring is cleaned out,
the Byte Queue Limit values need to be reset.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:02:35 -07:00
Petko Manolov
4d12997a9b drivers: net: usb: rtl8150: concurrent URB bugfix
This patch fixes a potential race with concurrently running asynchronous
write requests.  The values for device's RX control register are now
stored in dynamically allocated buffers so each URB submission has it's
own copy.  Doing it the old way is data clobbering prone.

This patch is against latest 'net' tree.

Signed-off-by: Petko Manolov <petkan@nucleusys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:42:05 -07:00
Dan Carpenter
25dff94ff9 isdn/kcapi: fix a small underflow
In get_capi_ctr_by_nr() and get_capi_appl_by_nr() the parameter comes
from skb->data.  The current code can underflow to one space before the
start of the array.

The sanity check isn't needed in __get_capi_appl_by_nr() but I changed
it to match the others.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 13:38:14 -07:00
John W. Linville
ba7c96bec5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2013-05-20 15:19:01 -04:00
Wang YanQing
dab73b4eb9 TTY: Fix tty miss restart after we turn off flow-control
I meet emacs hang in start if I do the operation below:
  1: echo 3 > /proc/sys/vm/drop_caches
  2: emacs BigFile
  3: Press CTRL-S follow 2 immediately

Then emacs hang on, CTRL-Q can't resume, the terminal
hang on, you can do nothing with this terminal except
close it.

The reason is before emacs takeover control the tty,
we use CTRL-S to XOFF it. Then when emacs takeover the
control, it may don't use the flow-control, so emacs hang.
This patch fix it.

This patch will fix a kind of strange tty relation hang problem,
I believe I meet it with vim in ssh, and also see below bug report:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=465823

Signed-off-by: Wang YanQing <udknight@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 12:15:59 -07:00
Peter Hurley
421b40a628 tty/vt: Fix vc_deallocate() lock order
Now that the tty port owns the flip buffers and i/o is allowed
from the driver even when no tty is attached, the destruction
of the tty port (and the flip buffers) must ensure that no
outstanding work is pending.

Unfortunately, this creates a lock order problem with the
console_lock (see attached lockdep report [1] below).

For single console deallocation, drop the console_lock prior
to port destruction. When multiple console deallocation,
defer port destruction until the consoles have been
deallocated.

tty_port_destroy() is not required if the port has not
been used; remove from vc_allocate() failure path.

[1] lockdep report from Dave Jones <davej@redhat.com>

 ======================================================
 [ INFO: possible circular locking dependency detected ]
 3.9.0+ #16 Not tainted
 -------------------------------------------------------
 (agetty)/26163 is trying to acquire lock:
 blocked:  ((&buf->work)){+.+...}, instance: ffff88011c8b0020, at: [<ffffffff81062065>] flush_work+0x5/0x2e0

 but task is already holding lock:
 blocked:  (console_lock){+.+.+.}, instance: ffffffff81c2fde0, at: [<ffffffff813bc201>] vt_ioctl+0xb61/0x1230

 which lock already depends on the new lock.

 the existing dependency chain (in reverse order) is:

 -> #1 (console_lock){+.+.+.}:
        [<ffffffff810b3f74>] lock_acquire+0xa4/0x210
        [<ffffffff810416c7>] console_lock+0x77/0x80
        [<ffffffff813c3dcd>] con_flush_chars+0x2d/0x50
        [<ffffffff813b32b2>] n_tty_receive_buf+0x122/0x14d0
        [<ffffffff813b7709>] flush_to_ldisc+0x119/0x170
        [<ffffffff81064381>] process_one_work+0x211/0x700
        [<ffffffff8106498b>] worker_thread+0x11b/0x3a0
        [<ffffffff8106ce5d>] kthread+0xed/0x100
        [<ffffffff81601cac>] ret_from_fork+0x7c/0xb0

 -> #0 ((&buf->work)){+.+...}:
        [<ffffffff810b349a>] __lock_acquire+0x193a/0x1c00
        [<ffffffff810b3f74>] lock_acquire+0xa4/0x210
        [<ffffffff810620ae>] flush_work+0x4e/0x2e0
        [<ffffffff81065305>] __cancel_work_timer+0x95/0x130
        [<ffffffff810653b0>] cancel_work_sync+0x10/0x20
        [<ffffffff813b8212>] tty_port_destroy+0x12/0x20
        [<ffffffff813c65e8>] vc_deallocate+0xf8/0x110
        [<ffffffff813bc20c>] vt_ioctl+0xb6c/0x1230
        [<ffffffff813b01a5>] tty_ioctl+0x285/0xd50
        [<ffffffff811ba825>] do_vfs_ioctl+0x305/0x530
        [<ffffffff811baad1>] sys_ioctl+0x81/0xa0
        [<ffffffff81601d59>] system_call_fastpath+0x16/0x1b

 other info that might help us debug this:

 [ 6760.076175]  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(console_lock);
                                lock((&buf->work));
                                lock(console_lock);
   lock((&buf->work));

  *** DEADLOCK ***

 1 lock on stack by (agetty)/26163:
  #0: blocked:  (console_lock){+.+.+.}, instance: ffffffff81c2fde0, at: [<ffffffff813bc201>] vt_ioctl+0xb61/0x1230
 stack backtrace:
 Pid: 26163, comm: (agetty) Not tainted 3.9.0+ #16
 Call Trace:
  [<ffffffff815edb14>] print_circular_bug+0x200/0x20e
  [<ffffffff810b349a>] __lock_acquire+0x193a/0x1c00
  [<ffffffff8100a269>] ? sched_clock+0x9/0x10
  [<ffffffff8100a269>] ? sched_clock+0x9/0x10
  [<ffffffff8100a200>] ? native_sched_clock+0x20/0x80
  [<ffffffff810b3f74>] lock_acquire+0xa4/0x210
  [<ffffffff81062065>] ? flush_work+0x5/0x2e0
  [<ffffffff810620ae>] flush_work+0x4e/0x2e0
  [<ffffffff81062065>] ? flush_work+0x5/0x2e0
  [<ffffffff810b15db>] ? mark_held_locks+0xbb/0x140
  [<ffffffff8113c8a3>] ? __free_pages_ok.part.57+0x93/0xc0
  [<ffffffff810b15db>] ? mark_held_locks+0xbb/0x140
  [<ffffffff810652f2>] ? __cancel_work_timer+0x82/0x130
  [<ffffffff81065305>] __cancel_work_timer+0x95/0x130
  [<ffffffff810653b0>] cancel_work_sync+0x10/0x20
  [<ffffffff813b8212>] tty_port_destroy+0x12/0x20
  [<ffffffff813c65e8>] vc_deallocate+0xf8/0x110
  [<ffffffff813bc20c>] vt_ioctl+0xb6c/0x1230
  [<ffffffff810aec41>] ? lock_release_holdtime.part.30+0xa1/0x170
  [<ffffffff813b01a5>] tty_ioctl+0x285/0xd50
  [<ffffffff812b00f6>] ? inode_has_perm.isra.46.constprop.61+0x56/0x80
  [<ffffffff811ba825>] do_vfs_ioctl+0x305/0x530
  [<ffffffff812b04db>] ? selinux_file_ioctl+0x5b/0x110
  [<ffffffff811baad1>] sys_ioctl+0x81/0xa0
  [<ffffffff81601d59>] system_call_fastpath+0x16/0x1b

Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 12:15:59 -07:00
Wei Yongjun
df957d2b9c TTY: ehv_bytechan: add missing platform_driver_unregister() when module exit
We have registered platform driver when module init, and
need unregister it when module exit.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 12:15:59 -07:00
Jiri Slaby
416187caed TTY: rocket, fix more no-PCI warnings
Commit "TTY: rocket, fix compilation warning" fixed a compilation
warning, but there was still a problem with !CONFIG_PCI configs. So
fix them for good by coupling the PCI functions together and moving
them inside a common #ifdef.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 12:15:59 -07:00
Wei Yongjun
2b359172e0 serial: mcf: missing uart_unregister_driver() on error in mcf_init()
Add the missing uart_unregister_driver() before return
from mcf_init() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:56 -07:00
Wei Yongjun
9bcc327844 tty: serial: mpc5xxx: fix error handing in mpc52xx_uart_init()
Add the missing uart_unregister_driver() and uninit before return
from mpc52xx_uart_init() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
Wei Yongjun
a82ea43965 serial: samsung: add missing platform_driver_unregister() when module exit
We have registered platform driver when module init, and
need unregister it when module exit.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
Lee Jones
f6b6f52b58 serial: pl011: protect attribute read from NULL platform data struct
It's completely feasible that platform data will be empty i.e. when
booting with Device Tree with no device AUXDATA. So we must protect
it's use in these use-cases, or risk a kernel Oops.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
Lars-Peter Clausen
383d2fc96c tty: nwpserial: Pass correct pointer to free_irq()
free_irq() expects the same pointer that was passed to request_irq(), otherwise
the IRQ is not freed.

The issue was found using the following coccinelle script:

<smpl>
@r1@
type T;
T devid;
@@
request_irq(..., devid)

@r2@
type r1.T;
T devid;
position p;
@@
free_irq@p(..., devid)

@@
position p != r2.p;
@@
*free_irq@p(...)
</smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
Ezequiel Garcia
dbd2df859a serial: 8250_dw: Add valid clk pointer check
Commit ffc3ae6dd "serial: 8250_dw: Enable runtime PM" introduced runtime
PM management, which enables/disables the clk without checking if the clk
is valid. However, this driver allows to be probed without a defined clk,
using clock-frequency, as a fallback.

Therefore, on platforms that are device tree probed using clock-frequency
instead of clk, we get an ugly NULL pointer dereference.

This patch fixes it by simply adding a check before accessing the clk api.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:54:55 -07:00
Linus Torvalds
622f223488 Error path fixes for abituguru and iio_hwmon drivers.
Drop erroneously created attributes from nct6775 driver.
 Drop redundant safety on cache lifetime for tmp401 driver.
 Add explicit maintainer for LM95234 and TMP401 drivers.
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Error path fixes for abituguru and iio_hwmon drivers.

 - Drop erroneously created attributes from nct6775 driver.

 - Drop redundant safety on cache lifetime for tmp401 driver.

 - Add explicit maintainer for LM95234 and TMP401 drivers.

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  MAINTAINERS: Add myself as maintainer for LM95234 and TMP401 drivers
  hwmon: (tmp401) Drop redundant safety on cache lifetime
  hwmon: fix error return code in abituguru_probe()
  hwmon: (iio_hwmon) Fix null pointer dereference
  hwmon: (nct6775) Do not create non-existing attributes
  hwmon: (iio_hwmon) Fix missing iio_channel_release_all call if devm_kzalloc fail
2013-05-20 11:36:52 -07:00
Linus Torvalds
5e427ec2d0 x86: Fix bit corruption at CPU resume time
In commit 78d77df715 ("x86-64, init: Do not set NX bits on non-NX
capable hardware") we added the early_pmd_flags that gets the NX bit set
when a CPU supports NX. However, the new variable was marked __initdata,
because the main _use_ of this is in an __init routine.

However, the bit setting happens from secondary_startup_64(), which is
called not only at bootup, but on every secondary CPU start.  Including
resuming from STR and at CPU hotplug time.  So the value cannot be
__initdata.

Reported-bisected-and-tested-by: Michal Hocko <mhocko@suse.cz>
Cc: stable@vger.kernel.org # v3.9
Acked-by: Peter Anvin <hpa@linux.intel.com>
Cc: Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-20 11:36:03 -07:00
Dan Carpenter
2a0ebf80aa USB: cxacru: potential underflow in cxacru_cm_get_array()
The value of "offd" comes off the instance->rcv_buf[] and we used it as
the offset into an array.  The problem is that we check the upper bound
but not for negative values.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20 11:35:47 -07:00
Axel Lin
cfb10898ef gpio: Don't override the error code in probe error handling
Otherwise, we return 0 in probe error paths when gpiochip_remove() returns 0.
Also show error message if gpiochip_remove() fails.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Cc: Denis Turischev <denis@compulab.co.il>
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-20 20:27:30 +02:00
Andy Adamson
774d5f14ee NFSv4.1 Fix a pNFS session draining deadlock
On a CB_RECALL the callback service thread flushes the inode using
filemap_flush prior to scheduling the state manager thread to return the
delegation. When pNFS is used and I/O has not yet gone to the data server
servicing the inode, a LAYOUTGET can preceed the I/O. Unlike the async
filemap_flush call, the LAYOUTGET must proceed to completion.

If the state manager starts to recover data while the inode flush is sending
the LAYOUTGET, a deadlock occurs as the callback service thread holds the
single callback session slot until the flushing is done which blocks the state
manager thread, and the state manager thread has set the session draining bit
which puts the inode flush LAYOUTGET RPC to sleep on the forechannel slot
table waitq.

Separate the draining of the back channel from the draining of the fore channel
by moving the NFS4_SESSION_DRAINING bit from session scope into the fore
and back slot tables.  Drain the back channel first allowing the LAYOUTGET
call to proceed (and fail) so the callback service thread frees the callback
slot. Then proceed with draining the forechannel.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-05-20 14:20:14 -04:00
Lisa Nguyen
fce9268357 xen: Fixed assignment error in if statement
Fixed assignment error in if statement in balloon.c

Signed-off-by: Lisa Nguyen <lisa@xenapiadmin.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-05-20 14:14:48 -04:00
Lisa Nguyen
3d645b02d9 xen/xenbus: Fixed over 80 character limit issue
Fixed the format length of the xenbus_backend_ioctl()
function to meet the 80 character limit in
xenbus_dev_backend.c

Signed-off-by: Lisa Nguyen <lisa@xenapiadmin.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-05-20 14:14:47 -04:00
Lisa Nguyen
d7e5075044 xen/xenbus: Fixed indentation error in switch case
Fixed the indentation error in the switch case in
xenbus_dev_backend.c

Signed-off-by: Lisa Nguyen <lisa@xenapiadmin.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-05-20 14:14:46 -04:00
Maxime Ripard
90dae4ebf0 gpio: mxs: Use set and clear capabilities of the gpio controller
The current driver doesn't use the set and clear registers found on the
mxs gpio controller.

This leads the generic gpio controller to be using some internal value
to avoid looking up the value stored in the registers, making it behave
pretty much like a cache.

This raises some coherency problem when a gpio is not modified by the
gpio controller, while it can easily be fixed by using the set and clear
registers.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-20 20:14:43 +02:00
David Cohen
2519f9abce gpio-langwell: fix irq conflicts when DT is not used
When DT is not used IOAPIC does not register irq domain. As result
IOAPIC won't care about gpio-langwell's virq and may cause conflict if
an irq number is equal to gpio-langwell's virq mapped beforehand.

This patch tells gpio_langwell to not ignore irq_base if != 0 and
preferably use it to avoid the conflict.

If DT is used, irq_base can safely be 0.

Signed-off-by: David Cohen <david.a.cohen@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-20 20:10:22 +02:00
Gregory CLEMENT
489e138eec ARM: dts: mvebu: Fix wrong the address reg value for the L2-cache node
During the conversion to the internal-regs' subnode, the L2-cache node
haven not been converted (due to a wrong choice made by myself during
the resolution of the merge conflict when I rebased the commit). This
leads to wrong address for L2 cache which prevent it to be used on
Armada 370. This commit fix the address reg of the e L2-cache node.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-20 17:44:54 +00:00